A preparation process and application of high-performance high-entropy alloy material

Abstract

The invention discloses a preparation process and application of a high-performance high-entropy alloy material, and relates to the field of alloys. The preparation process comprises: mixing metal powder and reinforcing powder to obtain mixed powder; the metal powder comprises iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium; the reinforcing powder comprises carbon, boron, boron oxide, titanium dioxide and zirconium dioxide; ball milling the mixed powder; placing the mixed powder in a smelting and sintering furnace, heating it to 960-1050° C. in a first atmosphere environment, treating it for 0.5-1.5 h; heating it to 1150-1280° C. in a second atmosphere environment, treating it for 1.5-3.5 h; heating it to 1450-1580° C. in a third atmosphere environment, treating it for 1-2.5 h; cooling it to 1310-1380° C. in a fourth atmosphere environment, treating it for 0.5-2 h; and cooling to obtain an alloy material; the first atmosphere environment comprises vacuum or argon, the second atmosphere environment comprises nitrogen, the third atmosphere environment comprises methane and diborane, and the fourth atmosphere environment comprises silane and nitrogen.

Description

Technical Field

[0001] The present invention belongs to the technical field of alloys, and in particular relates to a preparation process and application of a high-performance high-entropy alloy material. Background Art

[0002] Composite materials such as metals and alloys are commonly used materials. Materials are the basis for the development of many industries. Therefore, the performance of materials is crucial to the development of many industries. Different industries have different performance requirements for materials. With the development of industries such as aerospace and high-end equipment, the performance requirements for materials are getting higher and higher. Alloy materials are usually composite materials with certain properties prepared by processing a variety of metals and metals or non-metals. Alloy composite materials can be prepared by processes such as smelting and sintering. For different fields of use or environments, the performance requirements of materials are also different. For example, they need to meet certain mechanical strength, corrosion resistance, high temperature resistance, etc. High entropy alloy materials are usually composed of at least four alloying elements. The prepared high entropy alloy materials have attracted the attention of researchers due to their good performance. However, with the development of high-end equipment, the performance requirements for mechanical parts are also getting higher and higher. The mechanical properties of structural parts prepared by existing materials are difficult to meet the performance requirements. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a preparation process of a high-performance high-entropy alloy material and its application, so as to solve the problem that the mechanical strength of existing high-entropy alloys is not high and it is difficult to meet the performance requirements.

[0004] The embodiment of the present invention provides a preparation process of a high-performance high-entropy alloy material, comprising:

[0005] Step S1: mixing metal powder and reinforcing powder to obtain mixed powder;

[0006] Metal powders include iron, titanium, aluminum, zirconium, cobalt, tungsten, and chromium; reinforcing powders include carbon, boron, boron oxide, titanium dioxide, and zirconium dioxide;

[0007] Step S2: ball milling the mixed powder;

[0008] Step S3: then placing the mixed powder in a smelting and sintering furnace in a first atmosphere environment and heating it to 960-1050° C. for 0.5-1.5 h;

[0009] Step S4: heating to 1150-1280° C. in a second atmosphere for treatment for 1.5-3.5 hours;

[0010] Step S5: then heating to 1450-1580° C. in a third atmosphere environment for treatment for 1-2.5 hours;

[0011] Step S6: Finally, the temperature is lowered to 1310-1380° C. in the fourth atmosphere environment for treatment for 0.5-2 h;

[0012] Step S7: cooling down to obtain a high entropy alloy material;

[0013] The first atmosphere environment includes a vacuum or argon atmosphere, the second atmosphere environment includes a nitrogen atmosphere, the third atmosphere environment includes a methane and diborane atmosphere, and the fourth atmosphere environment includes a silane and nitrogen atmosphere.

[0014] Optionally, the molar ratio of iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium is 0.95:1.06:1.1:1.05:1:1.05:1.

[0015] Optionally, the mass of carbon is 0.6-1.6% of the mass of the mixed powder, and the mass of boron is 0.2-0.5% of the mass of the mixed powder; and / or

[0016] The mass of boron oxide in the mixed powder is 0.1-0.4% of the mass of the mixed powder, the mass of titanium dioxide is 0.15-0.3% of the mass of the mixed powder, and the mass of zirconium dioxide is 0.1-0.3% of the mass of the mixed powder.

[0017] Optionally, the second atmosphere environment includes nitrogen and argon; and / or

[0018] The third atmosphere environment includes methane, diborane, argon; and / or

[0019] The fourth atmosphere includes silane, nitrogen and argon.

[0020] Optionally, the pressure of the second atmosphere is 6-10 MPa; and / or

[0021] The pressure of the third atmosphere is 10-20 MPa; and / or

[0022] The pressure of the fourth atmosphere is 30-45 MPa.

[0023] Optionally, the second atmosphere environment comprises nitrogen and argon, and the volume proportion of nitrogen is 12-20%; and / or

[0024] The third atmosphere environment includes methane, diborane and argon, wherein the volume proportion of methane is 3-8%, and the volume proportion of diborane is 2-5%; and / or

[0025] The fourth atmosphere environment includes silane, nitrogen and argon, with the volume proportion of silane being 2-5% and the volume proportion of nitrogen being 4-10%.

[0026] Optionally, the reinforced powder comprises:

[0027] Composite powder, the preparation method of the composite powder comprises:

[0028] Grinding and mixing titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride to obtain a mixed material;

[0029] The mixture is placed in a vacuum and treated at 1050-1180°C for 1-3h;

[0030] Then raise the temperature to 1270-1350°C and treat in nitrogen and argon environment for 1-2.5h;

[0031] Then the temperature is raised to 1450-1630°C and treated in a diborane and argon environment for 0.5-2.5h;

[0032] Finally, the mixture is cooled and ground into powder to obtain composite powder.

[0033] Optionally, the molar ratio of titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride in the mixture is (0.5-0.8):(1-1.3):(0.2-0.6):(2.2-4.3):(0.3-0.6):(0.5-0.9).

[0034] Optionally, the reinforcing powder comprises:

[0035] Silicon diimide.

[0036] The alloy prepared by the preparation process described in the embodiment of the present invention is used to prepare alloy parts, and the alloy parts include mechanical parts.

[0037] The preparation process of the high-performance high-entropy alloy material of the present invention comprises: step S1: mixing metal powder and reinforcing powder to obtain mixed powder; the metal powder comprises iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium; the reinforcing powder comprises carbon, boron, boron oxide, titanium dioxide and zirconium dioxide; step S2: ball milling the mixed powder; step S3: then placing the mixed powder in a smelting and sintering furnace in a first atmosphere environment and heating it to 960-1050° C. for treatment for 0.5-1.5h; step S4: then heating it to 1150-1150° C. in a second atmosphere environment. 1280℃ for treatment for 1.5-3.5h; step S5: then heat up to 1450-1580℃ in the third atmosphere for treatment for 1-2.5h; step S6: finally cool down to 1310-1380℃ in the fourth atmosphere for treatment for 0.5-2h; step S7: cool down to obtain high entropy alloy material; the first atmosphere includes vacuum or argon atmosphere, the second atmosphere includes nitrogen atmosphere, the third atmosphere includes methane and diborane atmosphere, and the fourth atmosphere includes silane and nitrogen atmosphere. The alloy material prepared by the above components and preparation process has high mechanical strength, good density, high hardness, good high temperature resistance and corrosion resistance, can be used in high-end equipment and aerospace fields, and can meet a variety of application requirements. DETAILED DESCRIPTION

[0038] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The preparation process of the high-performance high-entropy alloy material of the present invention comprises:

[0040] Step S1: mixing metal powder and reinforcing powder to obtain mixed powder;

[0041] Metal powders include iron, titanium, aluminum, zirconium, cobalt, tungsten, and chromium; reinforcing powders include carbon, boron, boron oxide, titanium dioxide, and zirconium dioxide;

[0042] Step S2: ball milling the mixed powder;

[0043] Step S3: then placing the mixed powder in a smelting and sintering furnace in a first atmosphere environment and heating it to 960-1050° C. for 0.5-1.5 h;

[0044] Step S4: heating to 1150-1280° C. in a second atmosphere for treatment for 1.5-3.5 hours;

[0045] Step S5: then heating to 1450-1580° C. in a third atmosphere environment for treatment for 1-2.5 hours;

[0046] Step S6: Finally, the temperature is lowered to 1310-1380° C. in the fourth atmosphere environment for treatment for 0.5-2 h;

[0047] Step S7: cooling down to obtain a high entropy alloy material;

[0048] The first atmosphere environment includes a vacuum or argon atmosphere, the second atmosphere environment includes a nitrogen atmosphere, the third atmosphere environment includes a methane and diborane atmosphere, and the fourth atmosphere environment includes a silane and nitrogen atmosphere.

[0049] The alloy material prepared by the above-mentioned components and preparation process has high mechanical strength, good density, high hardness, good high temperature resistance and corrosion resistance, can be used in high-end equipment and aerospace fields, and can meet a variety of application needs.

[0050] In some embodiments of the present invention, the molar ratio of iron, titanium, aluminum, zirconium, cobalt, tungsten, and chromium can be 0.95:1.06:1.1:1.05:1:1.05:1.

[0051] In some embodiments, the mass of carbon can be 0.6-1.6% of the mass of the mixed powder, and the mass of boron can be 0.2-0.5% of the mass of the mixed powder. For example, the mass of carbon can be 0.6%, 0.9%, 1.2% or 1.6% of the mass of the mixed powder, and the mass of boron can be 0.2%, 0.4% or 0.5% of the mass of the mixed powder.

[0052] Optionally, the mass of boron oxide in the mixed powder may be 0.1-0.4% of the mass of the mixed powder, the mass of titanium dioxide may be 0.15-0.3% of the mass of the mixed powder, and the mass of zirconium dioxide may be 0.1-0.3% of the mass of the mixed powder. For example, the mass of boron oxide in the mixed powder may be 0.2% of the mass of the mixed powder, the mass of titanium dioxide may be 0.15% of the mass of the mixed powder, and the mass of zirconium dioxide may be 0.15% of the mass of the mixed powder.

[0053] In an embodiment of the present invention, the second atmosphere environment may include nitrogen and argon.

[0054] Optionally, the third atmosphere environment may include methane, diborane, or argon.

[0055] Optionally, the fourth atmosphere may include silane, nitrogen and argon.

[0056] In some embodiments of the present invention, the pressure of the second atmosphere environment may be 6-10 MPa, for example, the pressure of the second atmosphere environment may be 6, 8 or 10 MPa.

[0057] Optionally, the pressure of the third atmosphere environment may be 10-20 MPa, for example, the pressure of the third atmosphere environment may be 10, 15 or 20 MPa.

[0058] Optionally, the pressure of the fourth atmosphere environment may be 30-45 MPa, for example, the pressure of the fourth atmosphere environment may be 30, 35, 40 or 45 MPa.

[0059] In an embodiment of the present invention, the second atmosphere environment may include nitrogen and argon, and the volume proportion of nitrogen is 12-20%. For example, the volume proportion of nitrogen may be 12%, 15%, 18% or 20%.

[0060] The third atmosphere environment may include methane, diborane, and argon, wherein the volume proportion of methane is 3-8%, and the volume proportion of diborane is 2-5%. For example, the volume proportion of methane may be 3%, 5% or 8%, and the volume proportion of diborane may be 2%, 4% or 5%.

[0061] The fourth atmosphere may include silane, nitrogen and argon, with the volume proportion of silane being 2-5%, and the volume proportion of nitrogen being 4-10%. For example, the volume proportion of silane may be 2%, 3% or 5%, and the volume proportion of nitrogen may be 4%, 6%, 8% or 10%.

[0062] In some embodiments, the reinforcing powder may include:

[0063] Composite powder, the mass of the composite powder can be 0.7-1.8% of the mass of the mixed powder. For example, the mass of the composite powder can be 0.7%, 1%, 1.2%, 1.5% or 1.8% of the mass of the mixed powder.

[0064] The preparation method of the composite powder may include:

[0065] Grinding and mixing titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride to obtain a mixed material;

[0066] The mixture is placed in a vacuum and sintered at 1050-1180°C for 1-3h;

[0067] Then the temperature is raised to 1270-1350°C and treated in a nitrogen and argon environment for 1-2.5 hours; in the nitrogen and argon mixture, the volume proportion of nitrogen is 6-15%;

[0068] Then the temperature is raised to 1450-1630°C and treated in a diborane and argon environment for 0.5-2.5h; in the mixture of diborane and argon, the volume proportion of diborane is 3-8%;

[0069] Finally, the mixture is cooled and ground into powder to obtain composite powder.

[0070] Optionally, the molar ratio of titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride in the mixture is (0.5-0.8):(1-1.3):(0.2-0.6):(2.2-4.3):(0.3-0.6):(0.5-0.9).

[0071] During the preparation process, the specific temperature, time and component content can be adjusted according to actual conditions.

[0072] In an embodiment of the present invention, the reinforcing powder may include:

[0073] Silicon diimide. The mass of silicon diimide can be 0.6-1.5% of the mass of the mixed powder. For example, the mass of silicon diimide can be 0.6%, 0.8% or 1.5% of the mass of the mixed powder.

[0074] The alloy prepared by the preparation process described in the embodiment of the present invention is used to prepare alloy parts, and the alloy parts include mechanical parts.

[0075] The present invention is described below by means of some embodiments.

[0076] Example 1

[0077] The preparation process of high entropy alloy materials includes the following steps:

[0078] Step S1: mixing metal powder and reinforcing powder to obtain mixed powder;

[0079] Metal powders include iron, titanium, aluminum, zirconium, cobalt, tungsten, and chromium; reinforcing powders include carbon, boron, boron oxide, titanium dioxide, and zirconium dioxide;

[0080] The molar ratio of iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium is 0.95:1.06:1.1:1.05:1:1.05:1;

[0081] The mass of carbon is 0.6% of the mass of the mixed powder, and the mass of boron is 0.2% of the mass of the mixed powder; the mass of boron oxide in the mixed powder is 0.4% of the mass of the mixed powder, the mass of titanium dioxide is 0.15% of the mass of the mixed powder, and the mass of zirconium dioxide is 0.3% of the mass of the mixed powder;

[0082] Step S2: ball milling the mixed powder;

[0083] Step S3: then placing the mixed powder in a smelting and sintering furnace in a first atmosphere environment and heating it to 960° C. for 1.5 hours;

[0084] Step S4: heating to 1150° C. in the second atmosphere for 3.5 hours;

[0085] Step S5: then heating to 1580° C. in the third atmosphere for 1 hour;

[0086] Step S6: finally cooling to 1310° C. in the fourth atmosphere environment for 2 hours;

[0087] Step S7: cooling down to obtain a high entropy alloy material;

[0088] Among them, the second atmosphere environment includes nitrogen and argon, and the volume of nitrogen accounts for 12%; the third atmosphere environment includes methane, diborane, and argon, and the volume of methane accounts for 3%, and the volume of diborane accounts for 5%; the fourth atmosphere environment includes silane, nitrogen and argon, and the volume of silane accounts for 2%, and the volume of nitrogen accounts for 4%; the pressure of the second atmosphere environment is 6MPa, the pressure of the third atmosphere environment is 10MPa, and the pressure of the fourth atmosphere environment is 45MPa.

[0089] Example 2

[0090] The preparation process of high entropy alloy materials includes the following steps:

[0091] Step S1: mixing metal powder and reinforcing powder to obtain mixed powder;

[0092] Metal powders include iron, titanium, aluminum, zirconium, cobalt, tungsten, and chromium; reinforcing powders include carbon, boron, boron oxide, titanium dioxide, and zirconium dioxide;

[0093] The molar ratio of iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium is 0.95:1.06:1.1:1.05:1:1.05:1;

[0094] The mass of carbon is 1.6% of the mass of the mixed powder, and the mass of boron is 0.5% of the mass of the mixed powder; the mass of boron oxide in the mixed powder is 0.1% of the mass of the mixed powder, the mass of titanium dioxide is 0.3% of the mass of the mixed powder, and the mass of zirconium dioxide is 0.1% of the mass of the mixed powder;

[0095] Step S2: ball milling the mixed powder;

[0096] Step S3: then placing the mixed powder in a smelting and sintering furnace in a first atmosphere environment and heating it to 1050° C. for 0.5 h;

[0097] Step S4: heating to 1280° C. in the second atmosphere for 1.5 h;

[0098] Step S5: then heating to 1450° C. in the third atmosphere environment for 2.5 hours;

[0099] Step S6: Finally, the temperature is lowered to 1380° C. in the fourth atmosphere environment for treatment for 0.5 h;

[0100] Step S7: cooling down to obtain a high entropy alloy material;

[0101] Among them, the second atmosphere environment includes nitrogen and argon, and the volume of nitrogen accounts for 20%; the third atmosphere environment includes methane, diborane, and argon, and the volume of methane accounts for 8%, and the volume of diborane accounts for 2%; the fourth atmosphere environment includes silane, nitrogen and argon, and the volume of silane accounts for 5%, and the volume of nitrogen accounts for 10%; the pressure of the second atmosphere environment is 10MPa, the pressure of the third atmosphere environment is 20MPa, and the pressure of the fourth atmosphere environment is 30MPa.

[0102] Example 3

[0103] The preparation process of high entropy alloy materials includes the following steps:

[0104] Step S1: mixing metal powder and reinforcing powder to obtain mixed powder;

[0105] Metal powders include iron, titanium, aluminum, zirconium, cobalt, tungsten, and chromium; reinforcing powders include carbon, boron, boron oxide, titanium dioxide, and zirconium dioxide;

[0106] The molar ratio of iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium is 0.95:1.06:1.1:1.05:1:1.05:1;

[0107] The mass of carbon is 1% of the mass of the mixed powder, and the mass of boron is 0.3% of the mass of the mixed powder; the mass of boron oxide in the mixed powder is 0.3% of the mass of the mixed powder, the mass of titanium dioxide is 0.25% of the mass of the mixed powder, and the mass of zirconium dioxide is 0.2% of the mass of the mixed powder;

[0108] Step S2: ball milling the mixed powder;

[0109] Step S3: then placing the mixed powder in a smelting and sintering furnace in a first atmosphere environment and heating it to 1010° C. for 1 hour;

[0110] Step S4: heating to 1200° C. in a second atmosphere for 2.5 hours;

[0111] Step S5: then heating to 1520° C. in the third atmosphere for 1.5 h;

[0112] Step S6: finally cooling to 1350° C. in the fourth atmosphere environment for 1.5 h;

[0113] Step S7: cooling down to obtain a high entropy alloy material;

[0114] Among them, the second atmosphere environment includes nitrogen and argon, and the volume of nitrogen accounts for 16%; the third atmosphere environment includes methane, diborane, and argon, and the volume of methane accounts for 6%, and the volume of diborane accounts for 4%; the fourth atmosphere environment includes silane, nitrogen and argon, and the volume of silane accounts for 3%, and the volume of nitrogen accounts for 6%; the pressure of the second atmosphere environment is 8MPa, the pressure of the third atmosphere environment is 15MPa, and the pressure of the fourth atmosphere environment is 37MPa.

[0115] Example 4

[0116] The difference between Embodiment 4 and Embodiment 3 is:

[0117] Enhanced powder includes:

[0118] The composite powder has a mass of 0.7% of the mass of the mixed powder. The preparation method of the composite powder includes:

[0119] Grinding and mixing titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride to obtain a mixed material;

[0120] The mixture was sintered at 1050 °C for 3 h in vacuum;

[0121] Then the temperature was raised to 1270°C and treated for 2.5 hours in a nitrogen and argon environment; in the nitrogen and argon mixture, the volume proportion of nitrogen was 6%;

[0122] Then the temperature was raised to 1630°C and treated in a diborane and argon environment for 0.5 h; in the mixture of diborane and argon, the volume proportion of diborane was 3%;

[0123] Finally, the mixture is cooled and ground into powder to obtain composite powder.

[0124] The molar ratio of titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride in the mixture is 0.5:1:0.2:2.2:0.6:0.9.

[0125] Example 5

[0126] The difference between Embodiment 5 and Embodiment 3 is:

[0127] Enhanced powder includes:

[0128] The composite powder has a mass of 1% of the mass of the mixed powder. The preparation method of the composite powder includes:

[0129] Grinding and mixing titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride to obtain a mixed material;

[0130] The mixture was sintered at 1180 °C for 1 h in vacuum;

[0131] Then the temperature was raised to 1350°C and treated for 1 hour in a nitrogen and argon environment; in the nitrogen and argon mixture, the volume proportion of nitrogen was 15%;

[0132] Then the temperature was raised to 1450°C and treated for 2.5 hours in a diborane and argon environment; in the mixture of diborane and argon, the volume proportion of diborane was 8%;

[0133] Finally, the mixture is cooled and ground into powder to obtain composite powder.

[0134] The molar ratio of titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride in the mixture is 0.8:1.3:0.6:4.3:0.3:0.5.

[0135] Example 6

[0136] The difference between Embodiment 6 and Embodiment 3 is:

[0137] Enhanced powder includes:

[0138] The composite powder has a mass of 1.8% of the mass of the mixed powder. The preparation method of the composite powder includes:

[0139] Grinding and mixing titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride to obtain a mixed material;

[0140] The mixture was sintered at 1120 °C for 2 h in vacuum;

[0141] Then the temperature was raised to 1310°C and treated for 2 hours in a nitrogen and argon environment; in the nitrogen and argon mixed gas, the volume proportion of nitrogen was 9%;

[0142] Then the temperature was raised to 1550°C and treated for 1.5 hours in a diborane and argon environment; in the mixture of diborane and argon, the volume proportion of diborane was 5%;

[0143] Finally, the mixture is cooled and ground into powder to obtain composite powder.

[0144] The molar ratio of titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride in the mixture is 0.6:1.1:0.3:3.2:0.4:0.6.

[0145] Example 7

[0146] The difference between Embodiment 7 and Embodiment 3 is:

[0147] Enhanced powders include:

[0148] Silicon diimide: the mass of silicon diimide is 0.6% of the mass of the mixed powder.

[0149] Example 8

[0150] The difference between implementation 8 and implementation 3 is:

[0151] Enhanced powders include:

[0152] Silicon diimide, the mass of silicon diimide is 1.5% of the mass of the mixed powder.

[0153] Example 9

[0154] The difference between Embodiment 9 and Embodiment 6 is:

[0155] Enhanced powders include:

[0156] Silicon diimide, the mass of silicon diimide is 1.2% of the mass of the mixed powder.

[0157] The alloy material samples prepared in the above examples were subjected to performance tests, and specific performance test results are shown in Table 1.

[0158] Table 1 Performance test results of alloy material samples prepared in the examples

[0159] name Tensile strength / MPa Density / % Hardness / HV Example 1 1448 98.3 1245 Example 2 1457 98.5 1258 Example 3 1443 98.2 1241 Example 4 1479 98.7 1270 Example 5 1485 98.8 1281 Example 6 1489 99.1 1289 Example 7 1461 98.5 1264 Example 8 1472 98.6 1268 Example 9 1497 99.4 1296

[0160] It can be seen from Table 1 above that the high entropy alloy material in the above embodiment of the present invention has relatively good performance, high tensile strength, high hardness, good density, and can meet the mechanical performance requirements.

[0161] The embodiments of the present invention are described above, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A preparation process of a high-performance high-entropy alloy material, characterized in that: include: Step S1: mixing metal powder and reinforcing powder to obtain mixed powder; The metal powder includes iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium; the reinforcing powder includes carbon, boron, boron oxide, titanium dioxide and zirconium dioxide; the molar ratio of iron, titanium, aluminum, zirconium, cobalt, tungsten and chromium in the metal powder is 0.95:1.06:1.1:1.05:1:1.05:1; the mass of carbon in the reinforcing powder is 0.6-1.6% of the mass of the mixed powder, the mass of boron is 0.2-0.5% of the mass of the mixed powder, the mass of boron oxide is 0.1-0.4% of the mass of the mixed powder, the mass of titanium dioxide is 0.15-0.3% of the mass of the mixed powder, and the mass of zirconium dioxide is 0.1-0.3% of the mass of the mixed powder; Step S2: ball milling the mixed powder; Step S3: then placing the mixed powder in a smelting and sintering furnace in a first atmosphere environment and heating it to 960-1050° C. for 0.5-1.5 h; Step S4: heating to 1150-1280° C. in a second atmosphere for treatment for 1.5-3.5 hours; Step S5: then heating to 1450-1580° C. in a third atmosphere environment for treatment for 1-2.5 hours; Step S6: Finally, the temperature is lowered to 1310-1380° C. in the fourth atmosphere environment for treatment for 0.5-2 h; Step S7: cooling down to obtain a high entropy alloy material; Wherein, the first atmosphere environment includes a vacuum or argon atmosphere, the second atmosphere environment includes a nitrogen atmosphere, the third atmosphere environment includes a methane and diborane atmosphere, and the fourth atmosphere environment includes a silane and nitrogen atmosphere; The reinforced powder includes: composite powder, the mass of the composite powder is 0.7-1.8% of the mass of the mixed powder, and the preparation method of the composite powder includes: Grind and mix titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride to obtain a mixture; the molar ratio of titanium dioxide, boric acid, vanadium pentoxide, carbon powder, silicon carbide and aluminum nitride in the mixture is (0.5-0.8): (1-1.3): (0.2-0.6): (2.2-4.3): (0.3-0.6): (0.5-0.9); The mixture is placed in a vacuum and treated at 1050-1180°C for 1-3h; Then raise the temperature to 1270-1350°C and treat in nitrogen and argon environment for 1-2.5h; Then the temperature is raised to 1450-1630°C and treated in a diborane and argon environment for 0.5-2.5h; Finally, the mixture is cooled and ground into powder to obtain composite powder.

2. The preparation process according to claim 1, characterized in that: The second atmosphere environment comprises nitrogen and argon; and / or The third atmosphere environment includes methane, diborane, argon; and / or The fourth atmosphere includes silane, nitrogen and argon.

3. The preparation process according to claim 1 or 2, characterized in that: The pressure of the second atmosphere is 6-10 MPa; and / or The pressure of the third atmosphere is 10-20 MPa; and / or The pressure of the fourth atmosphere is 30-45 MPa.

4. The preparation process according to claim 1 or 2, characterized in that: The second atmosphere environment comprises nitrogen and argon, wherein the volume proportion of nitrogen is 12-20%; and / or The third atmosphere environment includes methane, diborane and argon, wherein the volume proportion of methane is 3-8%, and the volume proportion of diborane is 2-5%; and / or The fourth atmosphere environment includes silane, nitrogen and argon, with the volume proportion of silane being 2-5% and the volume proportion of nitrogen being 4-10%.

5. The preparation process according to claim 1, characterized in that: The enhanced powder also includes: Silicon diimide, the mass of silicon diimide is 0.6-1.5% of the mass of the mixed powder.

6. Use of the alloy prepared by the preparation process according to any one of claims 1 to 5 in preparing alloy parts, wherein the alloy parts include mechanical parts.